THE COAST OF CALIFORNIA. 123 



as compared with the diameter of the bell, those of pano- 

 pyra are very long. As for the most part we have nothing 

 but figures to guide in the determination of the different 

 species of Pacific Pelagias, a short description of the Pela- 

 gia found by me is here given. 



Bell hemispherical or flat, rounded, flattened at the 

 apex. The diameter of the bell is about double its height. 

 Nematocysts strewn in clusters over the outer surface. 

 Color pinkish. Color of cluster of nematocysts, white. 

 Marginal lobes, pointed or rounded, one between each ten- 

 tacle and otocyst, making in all eight long, flat, dark red 

 tentacles. Eight hooded sense-bodies alternating with the 

 tentacles. The sense-bodies are bright orange in color. 



The oral arms, four in number, are long and slender, 

 several times the diameter of the bell. Surface cov- 

 ered with nematocysts, and lips furnished with fimbriated 

 edges. Color pinkish. The specimen which is repre- 

 sented (Plate v, fig. 1) has a bell eight inches in diame- 

 ter. The oral arms of this specimen when extended were 

 three feet in length. Another specimen had oral arms six 

 feet long. The tentacles are much longer than the oral 

 arms, and have a bright red color while the bell and oral 

 arms are pinkish. The marginal sense-bodies are bright 

 orange. The specimens were found in the Santa Barbara 

 Channel off Santa Cruz Island. 



Pelagia panopyra has thus far been described from the 

 tropical regions of the Pacific and from Australia in the 

 South Sea. Our knowledge of it has been built up for 

 the most part from Lesson's figure. Of this figure, Agassiz 

 says, "Nothing can be worse than the figures of this acaleph 

 published by Lesson." Special descriptions and figures 

 have also been published by Eschscholtz and Brandt. 

 Peron and Leseuer have also given a figure, and Haeckel 

 has brought together in a collated form what is known of 



ESSEX INST. BULLETIN, VOL. XXI 9 



